Using ground-penetrating radar, topography and classification of vegetation to model the sediment and active layer thickness in a periglacial lake catchment, Western Greenland, link to shapefiles ...

• Main Authors: Petrone, Johannes, Sohlenius, Gustav, Johansson, Emma, Lindborg, Tobias, Näslund, Jens-Ove, Strömgren, Mårten, Brydsten, Lars
• Format: Dataset
• Language: English
• Published: PANGAEA 2016
• Subjects: GReenland Analogue Surface Project GRASP; Greenland
• Online Access: https://dx.doi.org/10.1594/pangaea.845258; https://doi.pangaea.de/10.1594/PANGAEA.845258

The geometries of a catchment constitute the basis for distributed physically based numerical modeling of different geoscientific disciplines. In this paper results from ground-penetrating radar (GPR) measurements, in terms of a 3-D model of total sediment thickness and active layer thickness in a periglacial catchment in western Greenland, are presented. Using the topography, the thickness and distribution of sediments are calculated. Vegetation classification and GPR measurements are used to scale active layer thickness from local measurements to catchment-scale models. Annual maximum active layer thickness varies from 0.3 m in wetlands to 2.0 m in barren areas and areas of exposed bedrock. Maximum sediment thickness is estimated to be 12.3 m in the major valleys of the catchment. A method to correlate surface vegetation with active layer thickness is also presented. By using relatively simple methods, such as probing and vegetation classification, it is possible to upscale local point measurements to ... : Supplement to: Petrone, Johannes; Sohlenius, Gustav; Johansson, Emma; Lindborg, Tobias; Näslund, Jens-Ove; Strömgren, Mårten; Brydsten, Lars (2016): Using ground-penetrating radar, topography and classification of vegetation to model the sediment and active layer thickness in a periglacial lake catchment, Western Greenland. Earth System Science Data, 8(2), 663-677 ...